Jinn (Arabic: Ø§ÙØ¬Ùââ, al-jinn), also romanized as djinn or anglicized as genies (with the more broad meaning of spirits), are supernatural creatures in early Arabian and later Islamic mythology and theology. An individual member of the jinn is known as a jinni, djinni, or genie (Ø§ÙØ¬ÙÙ, al-jinnÄ«). They are mentioned frequently in the Quran (the 72nd sura is titled SÅ«rat al-Jinn) and other Islamic texts.
Once you tighten up and lose range of motion in your arms, it reduces stride length, which is difficult to get back without burning a lot of energy. While sprinting, it is important to get a full range of motion with the arms. Remember, speed is a product of stride length and stride frequency. Stride length and frequency are determined, in part, by the motion of the arms. If you are lazy or passive with your arm action, you are limiting your potential for speed.
By Jon-Erik Kawamoto, MSc, CSCS, CEP, Published Jul. 6, 2015, Updated Jan. 18, 2016 at 12:30 PM UTC. Itâs almost common knowledge now that runners need to have strong gluteal muscles. They are important for extending your hips and for creating stability at your pelvis and knees. Due to the low knee lift involved in distance running, the gluteals donât really develop the way they do in sprinters. This is why you need to incorporate glute-strengthening exercises in your weekly routine.